EDKP 395 Lecture Notes - Lecture 28: Hyperventilation, Diarrhea, Phosphate

• School: McGill University
• Department: Kinesiology and Physical Ed
• Course: EDKP 395
• Professor: Dennis Jensen

Document Summary

3- group iv send phrenic afferent to cardiovascular control centers. 4- cardiovascular control centers increase sympathetic efferent vasomotor outflow to limb. 6- blood flow so o2 transport. 7- rate of locomotor fatigue & perception of effort/fatigue. Respiratory muscle work = compromises leg blood flow during maximal exercise. 100% = control normal physiological response < 100% = unloading wob > 100% = loading wob. 1- as wob = leg vascular resistance higher vasoconstriction of vessels. 2- as wob = leg muscle blood flow lower conductance in vessels. 3- as wob = leg oxygen uptake v"o2 lower due to less blood delivered to leg. 4- as wob = lesser % of whole body v"o2 being utilized by exercising legs 80% to 60% 1- as wob = leg vascular resistance lower vasodilation of vessels. 2- as wob = leg muscle blood flow higher conductance in vessels. 3- as wob = leg oxygen uptake v"o2 higher due to more blood delivered to leg.